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J. PROVUNCHER. WATER TUBE STEAM BUILEB.

(Application filed May 16, 1898.)

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WATER TUBE STEAM BUILEB.

(Application med may 1e, 1891s.)

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WATER TUBE STEAM BOILER.

(Application filed May 16` 1898.2

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JOSEPII PROVUNOHER, OF EAST PROVIDENCE, RHODE ISLAND.

WATER-TUBE STEAM-BOILER.

SPECIFICATION forming part of Letters Patent No. 617,298, dated January 3, 1899.

Application filed May 16, 1898. Serial No. 680,865. (No model.)

"0 all whom it may concern,.-

Be it known that I, JOSEPH PRovUNcHER, residing in the town of East Providence, in the county of Providence and State of Rhode Island, have invented a new and useful Improvementin Tater-Tube Steam-Boilers; and I declare the following to be a specification thereof, reference being had to the accompanying drawings, in which like letters indicate like parts.

This invention relates to water-tube steamboilers in which the water-legs are arranged around the four sides of the fire-box and open into and extend vertically from the mud-drum ofthe boiler to provide an increased heatingsurface; and it consists in the combination of the parts, as hereinafter described and claimed.

Figure 1 represents a front elevation of the boiler as provided with my improvement. Fig. 2 is a side elevation of the same. Fig. 3 is a rear elevation of the boiler. Fig. 4t is a top plan section of my improvement as seen on line 0c o; of Fig. l, and shows the manner of locating the water-legs on the mud-drum tubing.

In referring to Fig. l, A designates the muddrum tubing, and which extends lengthwise around the four sides of the lire-box, being provided with the usual elbows B at each corner thereof. From each of the four elbows B extend the vertical pipes C, each of which connects with a T-fitting D, located near the top portion of the boiler-tubing. A pipe or tube C extends from the upper end of the said fitting fora short distance and connects with the elbows E at the top of th'e boilertubing. Extending lengthwise from the elbows E, respectively, are short branch pipes F, having each end connecting with the T- fitting G, which is located centrally with the boiler. The pipes C C thus form continuous tubes from the muddrum to the elbows E and pipes F. Pipes or tubes I-I connect with the T-ittings D on each side, and all of the aforesaid piping is constructed alike, both on the front and rear elevation, respectively, of the boiler-tubing.

W'ater-legs C, provided with nipples J, enter into the mud-drum tubing A and extend vertically therefrom around the sides of the fire-box, said water-legs being equally divided from center to center, as will be seen in top plan section of Fig. 4.

On the front elevation of the boiler there are only four water-legs, two located at the central portion and one at either end of the mud-drum, respectively, and which allows of a space for the door-openings of the fire-box. The said four water-legs are connected with T-ittings K, which have the short tubes L extending lengthwise between them. Small pipes fm lead up vertically from the top of the fittings K and tubes L, respectively, and connect with the elbows n, from whence the said pipes continue lengthwise back and forth and around the turns p to the elbows r, where they connect with the vertical branch pipes s, leading to the tube or pipe F.

In referring to Fig. 2, which represents a side view of the boiler, small pipes fm lead vertically from the top of each of the waterlegs C and connect with an elbow n', from whence they continue back and forth lengthwise and around the turns p', thus forming a series of piping placed crosswise of the above series of piping fm, and each of the pipes m connects with an elbow fr', from which the vertical branch pipe s leads to the tube or pipe H. M M are pipes leading from the T-iitting Grof th e tube F to the steam-cylinder S. (See Fig. 2.

The water-inlet of the boiler is the pipe t', and which connects with the mud-drum, (see Fig. 1,) and the steam-outlet are the pipes o o, which open from the cylinder S.

After the several pipes and tubes are constructed and arranged to constitute a boiler, as herein shown and described, it is mounted on the grate of the required area. The muddrum surrounds the fire-box on the four sides thereof, and the whole boiler is inclosed by a suitable wall or casing in the usual manner. By this arrangement the water-legs C" vertically connect with the mud-drum A, which surrounds the fire-box, and so a greater area of heating-surface is exposed to the flame, and thereby the water contained within the water-legs is able to circulate more quickly and in an effective manner throughout the groups of tubes, and thus generates steam very rapidly.

I claim as a novel and useful invention and desire to secure by Letters' Patent- IOO In a Water-tube steam-boiler, the oombinaarranged to extend vertically from said mudtion of the mnd-drum pipes A continuous of drum pipes upon all the vertical sides of the Io each other and extending around the four fire-box, substantially as described. sides of the 'fire-box, the corner standi es ms 5 C connected With the mud-drum and lediJng JOSEPHmkPROVUNCHER' vertically to the manifolds F and H, respectively, With the Water-legs C connected and communicating With the mud-drum pipes and Witnesses:

AUGUSTA S. MEREWETHER, ROBERT W. BURBANK. 

